GB1536046A - Data processing system power control - Google Patents

Data processing system power control

Info

Publication number
GB1536046A
GB1536046A GB2731876A GB2731876A GB1536046A GB 1536046 A GB1536046 A GB 1536046A GB 2731876 A GB2731876 A GB 2731876A GB 2731876 A GB2731876 A GB 2731876A GB 1536046 A GB1536046 A GB 1536046A
Authority
GB
United Kingdom
Prior art keywords
systems
sub
service processor
power supply
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2731876A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to GB2731876A priority Critical patent/GB1536046A/en
Priority to FR7716791A priority patent/FR2357003A1/en
Priority to JP6495577A priority patent/JPS533731A/en
Priority to DE19772728231 priority patent/DE2728231A1/en
Priority to IT2496777A priority patent/IT1114110B/en
Priority to US05/810,560 priority patent/US4204249A/en
Publication of GB1536046A publication Critical patent/GB1536046A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/577—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices for plural loads

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Sources (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

1536046 Automatic control systems INTERNATIONAL BUSINESS MACHINES CORP 30 June 1976 27318/76 Heading G3N In a data processing system wherein power supplies to a plurality of sub-systems have to be switched in sequentially, one of the sub-systems comprises a service processor 1 with its own power supply 15 and the remaining sub-systems such as store A, processor B, and input/output units IOC to IOZ all have power supplies 5 controlled (via adapter 7) by the service processor subsystem. The service processor includes a microprogram for the above-mentioned power supply control function, arranged to control all the power supplies except its own power supply 15. Such control may include error correction and temperature compensation as well as the necessary sequencing on switch-on. The service processor is itself controlled by micro-programs and one of its functions is to load micro-programs into all sub-systems, including itself.
GB2731876A 1976-06-30 1976-06-30 Data processing system power control Expired GB1536046A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB2731876A GB1536046A (en) 1976-06-30 1976-06-30 Data processing system power control
FR7716791A FR2357003A1 (en) 1976-06-30 1977-05-25 MICROPROGRAMME POWER CONTROLLED DATA PROCESSING SYSTEM
JP6495577A JPS533731A (en) 1976-06-30 1977-06-03 Data processor
DE19772728231 DE2728231A1 (en) 1976-06-30 1977-06-23 CONTROL AND REGULATING CIRCUIT FOR THE POWER SUPPLY OF A DATA PROCESSING SYSTEM
IT2496777A IT1114110B (en) 1976-06-30 1977-06-23 EQUIPMENT FOR DATA PROCESSING PROVIDED WITH A SYSTEM OF CONTROL OF ITS POWER SUPPLIES
US05/810,560 US4204249A (en) 1976-06-30 1977-06-27 Data processing system power control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2731876A GB1536046A (en) 1976-06-30 1976-06-30 Data processing system power control

Publications (1)

Publication Number Publication Date
GB1536046A true GB1536046A (en) 1978-12-20

Family

ID=10257640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2731876A Expired GB1536046A (en) 1976-06-30 1976-06-30 Data processing system power control

Country Status (6)

Country Link
US (1) US4204249A (en)
JP (1) JPS533731A (en)
DE (1) DE2728231A1 (en)
FR (1) FR2357003A1 (en)
GB (1) GB1536046A (en)
IT (1) IT1114110B (en)

Families Citing this family (119)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307455A (en) * 1978-02-27 1981-12-22 Rockwell International Corporation Power supply for computing means with data protected shut-down
JPS5557956A (en) * 1978-10-25 1980-04-30 Nissan Motor Co Ltd Malfunction prevention unit of microcomputer
US4291355A (en) * 1979-07-30 1981-09-22 General Electric Company Programmable overload circuit
GB2055263B (en) * 1979-08-10 1983-01-12 Tokyo Shibaura Electric Co Adjusting protective relays
US4409665A (en) * 1979-12-26 1983-10-11 Texas Instruments Incorporated Turn-off-processor between keystrokes
US4370723A (en) * 1980-01-31 1983-01-25 Peak Demand Limiters, Inc. Computerized energy management system
US4383184A (en) * 1980-06-26 1983-05-10 Texas Instruments Incorporated Power controller
US4414623A (en) * 1980-10-01 1983-11-08 Motorola, Inc. Dual deadman timer circuit
JPS5775335A (en) * 1980-10-27 1982-05-11 Hitachi Ltd Data processor
FR2497373B1 (en) * 1980-12-30 1986-09-05 Bull Sa MICROPROGRAMMABLE POWER SUPPLY SYSTEM FOR A DATA PROCESSING SYSTEM HAVING A SERVICE PANEL FOR MAINTENANCE OPERATIONS AND METHODS OF OPERATING THIS SERVICE PANEL
US4514799A (en) * 1981-02-24 1985-04-30 Bell & Howell Company Bus system architecture and microprocessor system
DE3213266A1 (en) * 1981-04-09 1983-01-20 Ricoh Co., Ltd., Tokyo CONTROL DEVICE FOR A FACSIMILE SYSTEM
US4458273A (en) * 1981-04-28 1984-07-03 Iomega Corporation Magnetic disk drive control apparatus and method
JPS589488A (en) * 1981-07-09 1983-01-19 Pioneer Electronic Corp Reset mechanism of central arithmetic processor of system having plural central arithmetic processors
JPS5829096A (en) * 1981-08-13 1983-02-21 株式会社東芝 Process variable transmitter
US4455601A (en) * 1981-12-31 1984-06-19 International Business Machines Corporation Cross checking among service processors in a multiprocessor system
JPS58127262A (en) * 1982-01-25 1983-07-29 Toshiba Corp Microcomputer
JPS59739A (en) * 1982-06-28 1984-01-05 Fujitsu Ltd Time assurance system in microprogram processor
JPS59113966A (en) * 1982-12-20 1984-06-30 Daishin Kako Kk Method for opening nozzle hole to vessel for molten metal
JPS59135569A (en) * 1983-01-24 1984-08-03 Sharp Corp Control system of multi-processor
AU577311B2 (en) * 1983-02-03 1988-09-22 Nec Corporation Power supply control system
JPS59212930A (en) * 1983-05-18 1984-12-01 Hitachi Ltd Terminal-priority electronic computer system
US4747041A (en) * 1983-06-27 1988-05-24 Unisys Corporation Automatic power control system which automatically activates and deactivates power to selected peripheral devices based upon system requirement
US4549274A (en) * 1983-07-11 1985-10-22 Honeywell Inc. Distributed electric power demand control
JPS6036386A (en) * 1983-08-05 1985-02-25 東芝セラミツクス株式会社 Filler for sliding nozzle
JPS6061835A (en) * 1983-09-13 1985-04-09 Nec Corp Power source control system
US4602341A (en) * 1983-09-16 1986-07-22 General Electric Company Shared data logger controller and method
US5125077A (en) * 1983-11-02 1992-06-23 Microsoft Corporation Method of formatting data from a mouse
US4866602A (en) * 1983-11-02 1989-09-12 Microsoft Corporation Power supply for a computer peripheral device which positions a cursor on a computer display
US4573117A (en) * 1983-11-07 1986-02-25 Motorola, Inc. Method and apparatus in a data processor for selectively disabling a power-down instruction
US4591855A (en) * 1983-12-27 1986-05-27 Gte Communication Products Corporation Apparatus for controlling a plurality of current sources
US4528458A (en) * 1984-01-06 1985-07-09 Ncr Corporation Self-diagnostic redundant modular power supply
US4652769A (en) * 1984-02-14 1987-03-24 Ion Tech, Inc. Module power supply
US5093804A (en) * 1984-06-04 1992-03-03 Ge Fanuc Automation North America, Inc. Programmable controller input/output communications system
US4872136A (en) * 1984-06-04 1989-10-03 Ge Fanuc Automation North America, Inc. Programmable controller input/output communications system
US4677566A (en) * 1984-10-18 1987-06-30 Burroughs Corporation Power control network for multiple digital modules
US4695946A (en) * 1984-10-25 1987-09-22 Unisys Corporation Maintenance subsystem for computer network including power control and remote diagnostic center
US4658353A (en) * 1984-11-20 1987-04-14 Burroughs Corporation System control network for multiple processor modules
US4663539A (en) * 1984-11-29 1987-05-05 Burroughs Corporation Local power switching control subsystem
US4673826A (en) * 1984-12-20 1987-06-16 The United States Of America As Represented By The Secretary Of The Air Force Autonomous uninterruptable power supply apparatus
US4890271A (en) * 1985-04-12 1989-12-26 American Telephone And Telegraph Company Redundant termination of a communication line for maintaining the line properly terminated when one of the terminations is unpowered
US4769555A (en) * 1985-10-01 1988-09-06 Pulizzi Engineering Inc. Multi-time delay power controller apparatus with time delay turn-on and turn-off
US5119489A (en) * 1985-10-02 1992-06-02 International Business Machines Corporation Method of monitoring the bring up of all units in a multiple system from a remote unit including diagnostic testing with visual indicator illumination indicating operability
US5184312A (en) * 1985-10-13 1993-02-02 The Boeing Company Distributed built-in test equipment system for digital avionics
JPH0817539B2 (en) * 1986-07-16 1996-02-21 株式会社東芝 Load group control device for electric motors, etc.
US4785406A (en) * 1986-09-17 1988-11-15 Advanced Micro Devices, Inc. Quad exchange power controller
JPS63128266A (en) * 1986-11-18 1988-05-31 Toshiba Corp Substrate voltage measuring system
US4878196A (en) * 1986-12-18 1989-10-31 Rose Frederick A Communications management system
US4823290A (en) * 1987-07-21 1989-04-18 Honeywell Bull Inc. Method and apparatus for monitoring the operating environment of a computer system
JPH0650457B2 (en) * 1987-10-14 1994-06-29 シャープ株式会社 Computer system device power controller
US4916628A (en) * 1988-07-08 1990-04-10 Commonwealth Edison Company Microprocessor-based control/status monitoring arrangement
US5247659A (en) * 1988-10-06 1993-09-21 International Computers Limited Method for bootstrap loading in a data processing system comprising searching a plurality of program source devices for a bootstrap program if initial data indicating a bootstrap program source device fails a validity check
JP2761924B2 (en) * 1989-06-08 1998-06-04 キヤノン株式会社 Communication unit between units
JP2533192B2 (en) * 1989-06-12 1996-09-11 富士通株式会社 Power-on reset circuit in multiprocessor system
US5008805A (en) * 1989-08-03 1991-04-16 International Business Machines Corporation Real time, fail safe process control system and method
US5214785A (en) * 1989-09-27 1993-05-25 Third Point Systems, Inc. Controller with keyboard emulation capability for control of host computer operation
JP2804125B2 (en) * 1989-11-08 1998-09-24 株式会社日立製作所 Fault monitoring device and control method for information processing system
DE69031705T2 (en) * 1989-11-29 1998-04-02 Toshiba Kawasaki Kk Computer system suitable for connecting an expansion unit
US5295258A (en) * 1989-12-22 1994-03-15 Tandem Computers Incorporated Fault-tolerant computer system with online recovery and reintegration of redundant components
EP0443876A3 (en) * 1990-02-23 1992-01-02 Kabushiki Kaisha Toshiba Computer system capable of connecting expansion unit
US5251320A (en) * 1990-05-25 1993-10-05 International Business Machines Corporation Power controller for permitting multiple processors to power up shared input/output devices and inhibit power down until all processors have ceased service with the I/O devices
US5070450A (en) * 1990-05-25 1991-12-03 Dell Usa Corporation Power on coordination system and method for multiple processors
US5359540A (en) * 1990-07-23 1994-10-25 Hugo Ortiz Computer assisted electric power management
US5220671A (en) * 1990-08-13 1993-06-15 Matsushita Electric Industrial Co., Ltd. Low-power consuming information processing apparatus
US5832286A (en) * 1991-12-04 1998-11-03 Sharp Kabushiki Kaisha Power control apparatus for digital electronic device
US5450073A (en) * 1991-12-31 1995-09-12 International Business Machines Corporation Controlling power sequencing of a control unit in an input/output system
JP2902204B2 (en) * 1992-03-24 1999-06-07 三菱電機株式会社 Signal processing device
US5630143A (en) * 1992-03-27 1997-05-13 Cyrix Corporation Microprocessor with externally controllable power management
US6343363B1 (en) * 1994-09-22 2002-01-29 National Semiconductor Corporation Method of invoking a low power mode in a computer system using a halt instruction
US5287292A (en) * 1992-10-16 1994-02-15 Picopower Technology, Inc. Heat regulator for integrated circuits
GB9222548D0 (en) * 1992-10-27 1992-12-09 Foseco Int Metallurgical pouring vessels
FI92448C (en) * 1992-12-29 1994-11-10 Nokia Telecommunications Oy A system for applying voltage to multiple common voltage lines of an electrical unit
DE9304981U1 (en) * 1993-04-01 1994-08-04 Heinzinger Electronic Gmbh Bus system
US5414863A (en) * 1993-04-02 1995-05-09 Cirrus Logic, Inc. Power control staggering circuit for powering different components at different delay timings
US7216064B1 (en) * 1993-09-21 2007-05-08 Intel Corporation Method and apparatus for programmable thermal sensor for an integrated circuit
US5513346A (en) * 1993-10-21 1996-04-30 Intel Corporation Error condition detector for handling interrupt in integrated circuits having multiple processors
US5535401A (en) * 1994-04-05 1996-07-09 International Business Machines Corporation Method and system of power and thermal management for a data processing system using object-oriented program design
US5596757A (en) * 1995-02-16 1997-01-21 Simple Technology, Inc. System and method for selectively providing termination power to a SCSI bus terminator from a host device
US5631852A (en) * 1995-05-22 1997-05-20 Eteq Microsystems, Inc. Smart cooling security system
US5671348A (en) * 1995-06-06 1997-09-23 General Railway Signal Corporation Non-vital turn off of vital output circuit
KR0167648B1 (en) * 1995-10-10 1999-01-15 김광호 Power supply device
DE19630614A1 (en) * 1996-07-29 1998-02-05 Siemens Ag Switchgear
WO1998019223A1 (en) * 1996-10-29 1998-05-07 Castleman Neal J Improved universal power-supply connection system for multiple electronic devices, and devices for use therewith
KR100245202B1 (en) * 1997-03-07 2000-02-15 윤종용 An apparatus for power control and its method in a computer system
JP3603577B2 (en) * 1997-12-26 2004-12-22 富士ゼロックス株式会社 Image processing system
US6317839B1 (en) 1999-01-19 2001-11-13 International Business Machines Corporation Method of and apparatus for controlling supply of power to a peripheral device in a computer system
US6665802B1 (en) 2000-02-29 2003-12-16 Infineon Technologies North America Corp. Power management and control for a microcontroller
US6657416B2 (en) * 2001-06-15 2003-12-02 Generac Power Systems, Inc. Control system for stand-by electrical generator
US7394445B2 (en) * 2002-11-12 2008-07-01 Power-One, Inc. Digital power manager for controlling and monitoring an array of point-of-load regulators
US6949916B2 (en) 2002-11-12 2005-09-27 Power-One Limited System and method for controlling a point-of-load regulator
US7456617B2 (en) * 2002-11-13 2008-11-25 Power-One, Inc. System for controlling and monitoring an array of point-of-load regulators by a host
US6833691B2 (en) * 2002-11-19 2004-12-21 Power-One Limited System and method for providing digital pulse width modulation
US7249267B2 (en) 2002-12-21 2007-07-24 Power-One, Inc. Method and system for communicating filter compensation coefficients for a digital power control system
US7266709B2 (en) 2002-12-21 2007-09-04 Power-One, Inc. Method and system for controlling an array of point-of-load regulators and auxiliary devices
US7673157B2 (en) 2002-12-21 2010-03-02 Power-One, Inc. Method and system for controlling a mixed array of point-of-load regulators through a bus translator
US7737961B2 (en) * 2002-12-21 2010-06-15 Power-One, Inc. Method and system for controlling and monitoring an array of point-of-load regulators
US7743266B2 (en) * 2002-12-21 2010-06-22 Power-One, Inc. Method and system for optimizing filter compensation coefficients for a digital power control system
US7882372B2 (en) * 2002-12-21 2011-02-01 Power-One, Inc. Method and system for controlling and monitoring an array of point-of-load regulators
US7836322B2 (en) * 2002-12-21 2010-11-16 Power-One, Inc. System for controlling an array of point-of-load regulators and auxiliary devices
US7373527B2 (en) 2002-12-23 2008-05-13 Power-One, Inc. System and method for interleaving point-of-load regulators
US7023190B2 (en) * 2003-02-10 2006-04-04 Power-One, Inc. ADC transfer function providing improved dynamic regulation in a switched mode power supply
US7710092B2 (en) * 2003-02-10 2010-05-04 Power-One, Inc. Self tracking ADC for digital power supply control systems
US6936999B2 (en) * 2003-03-14 2005-08-30 Power-One Limited System and method for controlling output-timing parameters of power converters
US7080265B2 (en) * 2003-03-14 2006-07-18 Power-One, Inc. Voltage set point control scheme
US7177723B2 (en) * 2003-08-28 2007-02-13 Spectra Logic Corporation Operational optimization after powering on a robotic data storage library
US7171571B2 (en) * 2003-08-28 2007-01-30 Spectra Logic Corporation Robotic data storage library with soft power on/off capability
US7222246B2 (en) * 2003-09-26 2007-05-22 Hewlett-Packard Development Company, L.P. Method for determining number of dynamically temperature-adjusted power supply units needed to supply power according to measure operating temperature of power supply units
US7372682B2 (en) * 2004-02-12 2008-05-13 Power-One, Inc. System and method for managing fault in a power system
US7141956B2 (en) * 2005-03-18 2006-11-28 Power-One, Inc. Digital output voltage regulation circuit having first control loop for high speed and second control loop for high accuracy
US7554310B2 (en) * 2005-03-18 2009-06-30 Power-One, Inc. Digital double-loop output voltage regulation
US7239115B2 (en) * 2005-04-04 2007-07-03 Power-One, Inc. Digital pulse width modulation controller with preset filter coefficients
US7327149B2 (en) * 2005-05-10 2008-02-05 Power-One, Inc. Bi-directional MOS current sense circuit
US7349813B2 (en) * 2006-05-16 2008-03-25 Dresser, Inc. Fault tolerant power system architecture for fluid flow measurement systems
US7802116B2 (en) * 2006-09-27 2010-09-21 Intel Corporation Subsystem power management
US8204611B2 (en) * 2007-02-20 2012-06-19 Caterpillar Inc. Method for reducing quiescent power draw and machine using same
US20080201023A1 (en) * 2007-02-20 2008-08-21 Darrel Berglund Method for reducing quiescent power draw and machine using same
US20090035121A1 (en) * 2007-07-31 2009-02-05 Dresser, Inc. Fluid Flow Modulation and Measurement
US7834613B2 (en) * 2007-10-30 2010-11-16 Power-One, Inc. Isolated current to voltage, voltage to voltage converter
EP3913466B1 (en) * 2020-05-20 2023-12-13 NXP USA, Inc. Safety monitoring of power-up and/or power-down of a power management device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736569A (en) * 1971-10-13 1973-05-29 Ibm System for controlling power consumption in a computer
US3842249A (en) * 1971-10-19 1974-10-15 Westinghouse Electric Corp Electrical system with programmed computer control and manually initiated control means
US3863270A (en) * 1972-05-19 1975-01-28 Paul H Haley Hybrid computer system including an analog calculator for rapidly generating electric power system loadflow solutions
US3972470A (en) * 1972-09-07 1976-08-03 Tokyo Denryoku Kabushiki Kaisha Electric power system supervisory control system comprising A/D converters at various points of the power system
JPS5214900B2 (en) * 1973-02-28 1977-04-25
US3828321A (en) * 1973-03-15 1974-08-06 Gte Automatic Electric Lab Inc System for reconfiguring central processor and instruction storage combinations
US3921141A (en) * 1973-09-14 1975-11-18 Gte Automatic Electric Lab Inc Malfunction monitor control circuitry for central data processor of digital communication system
US3928830A (en) * 1974-09-19 1975-12-23 Ibm Diagnostic system for field replaceable units
DE2458736C2 (en) * 1974-12-12 1981-09-17 Ibm Deutschland Gmbh, 7000 Stuttgart Method and arrangement for monitoring power supply systems
US4077059A (en) * 1975-12-18 1978-02-28 Cordi Vincent A Multi-processing system with a hierarchial memory having journaling and copyback
US4014005A (en) * 1976-01-05 1977-03-22 International Business Machines Corporation Configuration and control unit for a heterogeneous multi-system

Also Published As

Publication number Publication date
IT1114110B (en) 1986-01-27
US4204249A (en) 1980-05-20
JPS5715406B2 (en) 1982-03-30
JPS533731A (en) 1978-01-13
DE2728231A1 (en) 1978-01-12
FR2357003A1 (en) 1978-01-27
FR2357003B1 (en) 1980-02-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950630